.flex(@ai: center, @jc: center) {
    display: flex;
    align-items: @ai;
    justify-content: @jc;
  }
  
  .flex-column(@ai: center, @jc: center) {
    .flex(@ai, @jc);
  
    flex-direction: column;
  }
  
  .title(@fontSize: 32rpx, @fontWeight: 500) {
    font-size: @fontSize;
    font-weight: @fontWeight;
  }
  
  .textLine(@line) {
    overflow: hidden;
    display: -webkit-box;
    text-overflow: ellipsis;
    -webkit-line-clamp: @line;
    /*要显示的行数*/
    -webkit-box-orient: vertical;
  }
  
  .page-hasBar-bottom-Padding (@bottomH: 32rpx) {
    padding-bottom: calc(@bottomH + env(safe-area-inset-bottom));
  }